DE1018058B - Process for the preparation of 5 ª ‡ -hydroxy-6 ª ‰ -methyl-3-oxo-steroids of the androstane and pregnane series - Google Patents

Process for the preparation of 5 ª ‡ -hydroxy-6 ª ‰ -methyl-3-oxo-steroids of the androstane and pregnane series

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Publication number
DE1018058B
DE1018058B DEB40495A DEB0040495A DE1018058B DE 1018058 B DE1018058 B DE 1018058B DE B40495 A DEB40495 A DE B40495A DE B0040495 A DEB0040495 A DE B0040495A DE 1018058 B DE1018058 B DE 1018058B
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DE
Germany
Prior art keywords
hydroxy
androstane
steroids
methyl
oxo
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
DEB40495A
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German (de)
Inventor
Winifred June Adams
Dr Bernard Ellis
Dr Vladimir Petrow
Isobel Ann Stuart-Webb
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BDH Chemicals Ltd
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BDH Chemicals Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BDH Chemicals Ltd filed Critical BDH Chemicals Ltd
Publication of DE1018058B publication Critical patent/DE1018058B/en
Pending legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07JSTEROIDS
    • C07J1/00Normal steroids containing carbon, hydrogen, halogen or oxygen, not substituted in position 17 beta by a carbon atom, e.g. estrane, androstane

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Steroid Compounds (AREA)

Description

Verfahren zur Herstellung von 5 a-Hydroxy-6 ß-methyl-3-oxo-steroiden der Androstan- und Pregnan-Reihe 5 a-Hydroxy-6 ß-methyl-3-oxo-steroide der Androstan- und Pregnanreihe besitzen wertvolle biologische Eigenschaften, stellen aber auch Zwischenprodukte bei der Herstellung von Verbindungen mit solchen Eigenschaften dar. Gemäß dem erfindungsgemäßen Verfahren werden die obengenannten Verbindungen nachstehender Strukturformel dadurch hergestellt, daß man 3 ß : 5 a-Dihydroxy-6 ß-m-ethyl-steroide der Androstan- oder Pregnanreihe nachstehender Strukturformel in bekannter Weise oxydiert. Als Oxydationsmittel kommen unter anderem N-Bromacetamid, Kaliumchromat, Chromtrioxyd in Essigsäure oder Pyridin in Betracht. Die besondere Art des Oxydationsmittels hängt von der Art der Substituenten des Stoffes der Formel II ab, insbesondere von den Substituenten in 3-., 5- und 6-Stellung.Process for the production of 5α-hydroxy-6β-methyl-3-oxo-steroids of the androstane and pregnane series 5α-hydroxy-6β-methyl-3-oxosteroids of the androstane and pregnane series have valuable biological properties , but also represent intermediates in the preparation of compounds with such properties. According to the process according to the invention, the abovementioned compounds are of the structural formula below produced by using 3 ß: 5 α-dihydroxy-6 ß-m-ethyl steroids of the androstane or pregnane series of the structural formula below oxidized in a known manner. Suitable oxidizing agents include N-bromoacetamide, potassium chromate, chromium trioxide in acetic acid or pyridine. The particular type of oxidizing agent depends on the type of substituents of the substance of the formula II, in particular on the substituents in the 3-, 5- and 6-positions.

Beispiel 1 5 a-Hydroxy-6 ß-methylandrostan-3 : 17-dion 2,57 g rohes 6 ß-Methylandrostan-3 ß: 5 a : 17 ß-triol (hergestellt nach der Methode von Ushakov und K o s h e 1 e v a, J. Gen. Chem. UdS SR, 1940, 10, S.213) werden in 100m1 über Chromtrioxyd destillierter Essigsäure gelöst und auf etwa 10° abgekühlt. 2,5g Chromtrioxyd in 40 ml Essigsäure und 10 ml Wasser werden während einer Zeit von 20 Minuten tropfenweise zugegeben. Die Temperatur wird dabei auf 10 bis 15° gehalten. Die Mischung wird bei Zimmertemperatur weitere 21/2 Stunden gerührt. Es wird Methanol zugesetzt, und der wesentliche Anteil der Essigsäure wird im Vakuum entfernt. Nach Isolierung mit Äthylacetat ergibt sich 5 a-Hydroxy-6 ß-methylandrostan-3 : 17-dion (Schmelzpunkt 226 bis 227°; [a]ö ° = -I-68° (c = 0,324 in Chloroform). Der genannte Stoff fällt aus Aceton-Hexan in Form von Nadeln an.Example 1 5 a-Hydroxy-6 ß-methylandrostane-3: 17-dione 2.57 g of crude 6 ß-methylandrostane-3 ß: 5 a: 17 ß-triol (prepared according to the method of Ushakov and K oshe 1 eva, J. Gen. Chem. UdS SR, 1940, 10, p.213) are dissolved in 100 ml of acetic acid distilled over chromium trioxide and cooled to about 10 °. 2.5 g of chromium trioxide in 40 ml of acetic acid and 10 ml of water are added dropwise over a period of 20 minutes. The temperature is kept at 10 to 15 °. The mixture is stirred at room temperature for a further 21/2 hours. Methanol is added and most of the acetic acid is removed in vacuo. Isolation with ethyl acetate gives 5α-hydroxy-6β-methylandrostane-3: 17-dione (melting point 226 to 227 °; [a] δ ° = -I-68 ° (c = 0.324 in chloroform). The substance mentioned falls from acetone-hexane in the form of needles.

Beispiel 2 5a: 17 ß-Dihydroxy-6 ß: 17 a-dimethylandrostan-3-on 500 mg 6 ß : 17 a-Dimethylandrostan-3 ß : 5 a : 17 ßtriol in 100 ml Essigsäure werden mit 1,6 g Natriumchromat in 6 ml Wasser 17 Stunden bei Zimmertemperatur behandelt. Nach Zugabe einer kleinen Menge Methanol wird die Mischung im Vacuum konzentriert, mit Wasser verdünnt und mit Chloroform extrahiert. Nach Entfernung des Lösungsmittels aus dem gewaschenen und getrockneten Extrakt ergibt sich ein Rückstand, welcher aus Aceton-Hexan gereinigt wird. Das gereinigte Produkt ist 5a: 17 ß-Dihydroxy-6ß:17a-dimethylandrostan-3-on in Form von Kristallen (Schmelzpunkt 255°; [a]ö° = -28,5° (c=0,29 in Chloroform).Example 2 5a: 17β-Dihydroxy-6β: 17α-dimethylandrostan-3-one 500 mg 6β: 17α-Dimethylandrostan-3β: 5α: 17βtriol in 100 ml acetic acid are mixed with 1.6 g sodium chromate in Treated 6 ml of water for 17 hours at room temperature. A small amount of methanol is added and the mixture is concentrated in vacuo, diluted with water and extracted with chloroform. After removing the solvent from the washed and dried extract, a residue results which is purified from acetone-hexane. The purified product is 5a: 17β-dihydroxy-6β: 17a-dimethylandrostan-3-one in the form of crystals (melting point 255 °; [a] δ ° = -28.5 ° (c = 0.29 in chloroform).

Beispiel 3 5 a:17 ß-Dihydroxy-17 a-äthylen-6 ß-methylandrostan-3-on 1 g 17 a-Äthylen-6 fl-methylandrostan-3 ß : 5 a : 17 @-triol in 10 ml trockenem Pyridin wird zu 1 g Chromtrioxyd in 10 ml trockenem Pyridin gegeben. Nach 18 Stunden bei Zimmertemperatur wird die Mischung mit Wasser behandelt und das Produkt mit Äther isoliert. Bei der Kristallisation aus wäßrigem Äthanol bildeten sich flache Nadeln von 5 a : 17 ß-Dihydroxy-17 a-äthylen-6 ß-methylandrostan-3-on (Schmelzpunkt 243 bis 244°; [a]'°= -42° (c=1,138 in Chloroform). Beispiel 4 5 a-Hydroxy-6ß-methylallopregnan-3: 20-dion 6 ß- Methylallopregnan-3 ß : 5a: 20 (a+ß) triol in einer Menge von 5 g in 50 ml Essigsäure werden mit 3 g Chromtrioxyd in 150 ml 85'°/oiger Essigsäure behandelt. Die Mischung wird über Nacht auf Zimmertemperatur gehalten. Nach Zugabe von Wasser ergibt sich ein Feststoff, welcher gesammelt und aus Äthanol gereinigt wird. Dieser Feststoff ist 5 a-Hydroxy-6 ß-methylallopregnan-3 : 20-dion in Form von Prismen (Schmelzpunkt 255 bis 256°; [a]'°= -f-64,5° (c=0,49 in Chloroform).Example 3 5 a: 17 beta-dihydroxy-17 a-ethylene-6 ß-methylandrostane-3-one 1 g 17 a-ethylene-6-methylandrostane-fl 3 ß: 5 a: 17 @ triol in 10 ml of dry pyridine is added to 1 g of chromium trioxide in 10 ml of dry pyridine. After 18 hours at room temperature, the mixture is treated with water and the product is isolated with ether. During crystallization from aqueous ethanol, flat needles of 5 a: 17 ß-dihydroxy-17 a-ethylene-6 ß-methylandrostan-3-one (melting point 243 to 244 °; [a] '° = -42 ° (c = 1.138 in chloroform) Example 4 5 α-Hydroxy-6β-methylallopregnan-3: 20-dione 6β-methylallopregnan-3β: 5a: 20 (α + β) triol in an amount of 5 g in 50 ml of acetic acid treated with 3 g of chromium trioxide in 150 ml of 85% acetic acid. The mixture is kept at room temperature overnight. After addition of water, a solid results, which is collected and purified from ethanol. This solid is 5α-hydroxy-6 β-methylallopregnan-3: 20-dione in the form of prisms (melting point 255 to 256 °; [a] '° = -f-64.5 ° (c = 0.49 in chloroform).

Claims (2)

PATENTANSPRÜCHE: 1. Verfahren zur Herstellung von 5 a-Hydroxy-6ß-methyl-3-oxo-steroiden der Androstan- und Pregnanreihe nachstehender allgemeiner Strukturformel dadurch gekennzeichnet, daß man 3 ß : 5 a-Dihydroxy-6 ß-methyl-steroide der Androstan- und Pregnanreihe nachstehender allgemeiner Formel in bekannter Weise oxydiert. PATENT CLAIMS: 1. Process for the preparation of 5α-hydroxy-6β-methyl-3-oxo-steroids of the androstane and pregnane series with the following general structural formula characterized in that 3 ß: 5 a-dihydroxy-6 ß-methyl steroids of the androstane and pregnane series of the following general formula oxidized in a known manner. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß man als Oxydationsmittel N-Bromacetamid, Kaliumchromat oder Chromtrioxyd in Essigsäure oder Pyridin verwendet.2. The method according to claim 1, characterized in that that the oxidizing agent is N-bromoacetamide, potassium chromate or chromium trioxide in Acetic acid or pyridine is used.
DEB40495A 1955-06-09 1956-06-02 Process for the preparation of 5 ª ‡ -hydroxy-6 ª ‰ -methyl-3-oxo-steroids of the androstane and pregnane series Pending DE1018058B (en)

Applications Claiming Priority (1)

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GB1018058X 1955-06-09

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DE1018058B true DE1018058B (en) 1957-10-24

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DE (1) DE1018058B (en)

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